The Night Bookmobile by Audrey Niffenegger

The story follows Alexandra, a woman who encounters a mysterious bookmobile that appears only at night. Inside, she discovers that it contains every book she has ever read, curated by a librarian named Mr. Openshaw. As she becomes obsessed with the bookmobile and its contents, Alexandra's life takes a surreal turn, leading her to make profound choices about her relationship with literature and her own existence. The narrative explores themes of memory, loss, and the deep, personal connections people form with the books they read. The 6614th greatest book of all time